<?php
$id=$_GET['id'];
$name=$_GET['name'];
$price=$_GET['price'];
$num=$_GET['num'];

$conn=mysqli_connect('localhost','root','root','main');
mysqli_query($conn,"set charset 'utf8'");
mysqli_query($conn,"set character set 'utf8'");
$sql="update shop set name='$name',price=$price,num=$num where id=$id";
$res=mysqli_query($conn,$sql);

if($res){
	echo json_encode(array(
		'code'=>200,
		'body'=>array(
			'msg'=>"更新成功"
		)
	));		/* 没加分号会报错！！！！ */
}else{
	echo json_encode(
	array(
	'code'=>201,
	'body'=>array(
		'msg'=>'网络错误，请重试'
		)
	));
}

?>